Radiobuttons that have the same -value and -variable are effectively the same button, even if there are dozens of instances.

Putting Radiobuttons in different Frames does not group them; they are grouped by sharing the same -variable and distinguished within the group by different -values.

The -variable for the Radiobutton should be a reference to a scalar, e.g. \$something, \$hash{key}, \$array[6], etc. When the Radiobutton is selected - by the user or by calling $rdb->select - the -variable assigned to it is set to its -value. The reverse is also true: if the code sets the $something to a value matching a Radiobutton's -value, that Radiobutton becomes selected. 

use strict;
use warnings;
use Tk;
use Tk::Radiobutton;
my $mw = Tk::MainWindow->new;

my $rb_value; # undef, no Radiobutton selected
$mw->Radiobutton(-text=>'first',-value=>'one',-variable=>\$rb_value)->
+pack(-anchor=>'w');
$mw->Radiobutton(-text=>'second',-value=>'one',-variable=>\$rb_value)-
+>pack(-anchor=>'w');
$mw->Radiobutton(-text=>'third',-value=>'three',-variable=>\$rb_value)
+->pack(-anchor=>'w');

$mw->Label(-text=>'------------------------')->pack;

my $other_value = '0000ff'; # preset blue
$mw->Radiobutton(-text=>'RED',-value=>'ff0000',-variable=>\$other_valu
+e)->pack(-anchor=>'w');
$mw->Radiobutton(-text=>'GREEN',-value=>'00ff00',-variable=>\$other_va
+lue)->pack(-anchor=>'w');
$mw->Radiobutton(-text=>'BLUE',-value=>'0000ff',-variable=>\$other_val
+ue)->pack(-anchor=>'w');

MainLoop;
print 'rb:',$rb_value,$/;
print 'other:',$other_value,$/;

[download]

In reply to Re^3: Tk: Dynamic Radiobuttons toggle problem... by keszler
in thread Tk: Dynamic Radiobuttons toggle problem... by iMisspell

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